For the Inventor, By the Inventor

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Houston, TX, United States of America

Nine Downhole Technologies, LLC

USPTO Granted Patents = 16

CIPO Patents = 1

Forward Citations = 25

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9 inventors (with patents filed for the assignee):

Donald Roy Greenlee (9 out of 16 patents)

Donald Jonathan Greenlee (7 out of 13 patents)

Viggo Brandsdal (5 out of 21 patents)

4. Geir Valestrand Aasheim (3 out of 4 patents)

5. W Lynn Frazier (2 out of 68 patents)

6. Steven N Bailey (2 out of 5 patents)

7. Ronald Abt (2 out of 2 patents)

8. Brian David Oligschlaeger (1 out of 1 patent)

9. Geir Aasheim (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 12312911 - Multi-cycle counter system (2025-05-27),

2. 12215565 - Compact downhole tool (2025-02-04),

3. 11970922 - Multi-cycle counter system (2024-04-30),

4. 11946333 - Cup plug having a large flow-through inside diameter (2024-04-02),

5. 11891878 - Gas capable frangible disc barrier valve (2024-02-06),

6. 11761289 - Shearable sleeve (2023-09-19),

7. 11713649 - Plugging device (2023-08-01),

8. 11697975 - Compact downhole tool (2023-07-11),

9. 11578559 - Gas capable frangible disc barrier valve (2023-02-14),

10. 11459839 - Sleeve for downhole tools (2022-10-04),

11. 11371312 - Cup plug having a large flow-through inside diameter (2022-06-28),

12. 11365600 - Compact downhole tool (2022-06-21),

13. 11149522 - Plugging device (2021-10-19),

14. 11015415 - Filament-reinforced composite material with load-aligned filament windings (2021-05-25),

15. 10487615 - Cup plug having a large flow-through inside diameter (2019-11-26),

Nine Downhole Technologies, LLC is a leading provider of specialized downhole tools and services for the oil and gas industry. With a focus on innovation and quality, we offer a range of products including drilling motors, measurement while drilling (MWD) tools, and drilling jars. Our team of experts is dedicated to delivering reliable solutions to optimize drilling performance and maximize efficiency.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

16 Patents

#320 in Houston, TX

#1,192 in Texas

#19,281 in US

#36,652 in the World

Houston, TX, United States of America

Nine Downhole Technologies, LLC

Forward Citations = 25

9 inventors:

Donald Roy Greenlee (9 out of 16 patents)

Donald Jonathan Greenlee (7 out of 13 patents)

Viggo Brandsdal (5 out of 21 patents)

4. Geir Valestrand Aasheim (3 out of 4 patents)

5. W Lynn Frazier (2 out of 68 patents)

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